/*
 * Copyright (C) 2008 feilong
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.feilong.context.format;

import static com.feilong.core.Validator.isNullOrEmpty;

/**
 * 抽象的字符串格式化.
 *
 * @author <a href="https://github.com/ifeilong/feilong">feilong</a>
 * @since 1.14.3
 */
public abstract class AbstractStringFormatter implements StringFormatter{

    /*
     * (non-Javadoc)
     * 
     * @see com.feilong.context.formatter.StringFormatter#format(java.lang.String)
     */
    @Override
    public String format(String str){
        if (isNullOrEmpty(str)){
            return str;
        }
        return doFormat(str);
    }

    //---------------------------------------------------------------

    /**
     * Do format.
     *
     * @param str
     *            the str
     * @return the string
     */
    protected abstract String doFormat(String str);
}
